Collar-mounted stimulus trainer



FIG. 1 is a perspective view taken from the front, right and top of a collar-mounted stimulus trainer showing my new design, the broken lines are for illustrative purposes only and form no part of the claimed design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a front elevational view thereof, the rear elevational view being a mirror image; and,

FIG. 5 is a right elevational view thereof; the left elevational view being a mirror image. 

The ornamental design for a collar-mounted stimulus trainer, as shown and described. 